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I'm still new to geometry nodes for some years using blender, I'm trying to make a cool transition effect, but I have this problem of overlapping instances Keep in mind that it's animated! Also be sure to explain as clear as you can and make it short and simple! I have autism, and I have trouble understanding long walls of text! Provide image steps too!

What I have :

What I Have

My Nodes :

My nodes

What I want to achieve (Edited with Adobe Photoshop) :

What I want to achieve

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2 Answers 2

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Depending on the type of mesh (unfortunately this is not clearly visible here), the only node available to you for this is the Mesh Boolean node (choose the option Union). This essentially works like the Boolean modifier.

This is the only node in Geometry Nodes that has the ability to merge meshes.

Alternatively, you could simply use the Join Geometry node and achieve the desired visual impression with a shader.

Tip: In your specific case, however, you might need to apply the Realize Instances node first, so that the instances are translated into a mesh.

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  • $\begingroup$ I have never seen that node, since I am new to geometry nodes do you know where to connect it? I tried connecting it to something but it froze blender $\endgroup$
    – BeeAPotato
    May 11, 2022 at 7:56
  • $\begingroup$ Depending on the result you want you could also use a remesh modifier, directly after the geo-node modifier. $\endgroup$
    – jst kiko
    May 11, 2022 at 7:57
  • $\begingroup$ @BeeAPotato You can find the node in the category "Mesh", but only starting with Blender v3+ docs.blender.org/manual/en/latest/modeling/geometry_nodes/mesh/… $\endgroup$
    – quellenform
    May 11, 2022 at 7:59
  • $\begingroup$ @jst-kiko I tried the remesh modifier and fiddled around but I get no result, maybe because I forgot to say these meshes are Planes $\endgroup$
    – BeeAPotato
    May 11, 2022 at 8:03
  • $\begingroup$ @quellenform I have found the node but I'm wondering where to put it, either I replace the "Join Geometry" or something else $\endgroup$
    – BeeAPotato
    May 11, 2022 at 8:05
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The closest thing I could possibly find is using the Mesh to Volume node with Volume to Mesh.

It doesn't bring perfect results, but it is the closest I can get.

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